Can't login to BackOffice after upgrade to 1.7.6.9

[grsinternet]

I have upgraded from 1.7.6.3 to 1.7.6.9 via 1-click-upgrade module and now I can't login to the BackOffice - the login window is working, but when credentials are entered and login button clicked - no error message and comming back to login page.

I have noticed that when I have upgraded `classes` directory of newer version same happens - can't login to Admin.

 

 

Edited November 18, 2020 by grsinternet (see edit history)

[Add Makes]

1. Enable Debug mode

2. Clear cache folder manually

[grsinternet]

3 minutes ago, Add Makes said:

1. Enable Debug mode

2. Clear cache folder manually

1. Debug mode was enabled
2. Tried to delete, same situation 😪

[Add Makes]

3 minutes ago, grsinternet said:

1. Debug mode was enabled
2. Tried to delete, same situation 😪

can you try to login in different browser where you was not already logined

[jikail]

Check  prestashop log for more information in var/logs

[Guest]

rename and delete folder ./var/cache/prod and dev if exists

[stann84]

Same for me cannot acces on the admin page after credential 

i tried delete folder var/cache/...

I tried update phph 7.2 to 7.3 

i tried to delete file and backup from the folder un autoupgrade latest